“…[23] A variety of silver compounds, such as silver halides (AgX, X D Cl, Br, I), silver-containing oxides (Ag 3 PO 4 , Ag 2 CO 3 , AgGaO 2 , Ag 2 CrO 4 ), Ag 2 S and Ag 2 Se have shown the ability to decompose the organic pollutants under visible-light irradiation. [24] Silver chromate (Ag 2 CrO 4 ) is an important and promising inorganic material because of its unique electronic structure, crystal structure [17,25,26] and its good visible-light sensitive photocatalytic activity. [17,27] Particularly, Ag 2 CrO 4 materials exhibited extremely high photo oxidative capabilities for organic dye degradation under visible-light irradiation.…”